Change that one each season.
Change large blue water/separater one every 100 hrs.
The "F" filter was changed by Yamaha dealer last year, I will change that every other season.
I changed the filter in the VST tank this winter.
I'm quessing it was never changed, and needed it.
I'll change that every year, or every other, haven't really decided.
All cost $$$$.
But it's worth a trouble free boating/fishing season to me.
Put 400 hrs. on last year.
First year with used 2520XL/F250 Yamaha. 900 hrs. now
This boat is one of the best/economical fishing platforms there is, for the money.
Hey, it's not a deep vee, I don't want one the way fuel is headed, and I don't want twins either.
Just treat the fuel with ring free and stabil each fill, and change the engine oil and filter every 100 hrs.
I learned the hard way last year with dirty fuel in the bottom of the tank, and no treatment.
Cost me two low pressure fuel pumps, one Yamaha bought, and one I did.
Catch em up,
Reel Job